calc
posted by someone please help me with this!!!! .
The point P(4, −2)lies on the curve y = 2/(3 − x).
(a) If Q is the point(x, 2/(3 − x)),use your calculator to find the slope mPQ of the secant line PQ (correct to six decimal places) for the following values of x.
1) 3.9 mPQ=
2) 3.99 mPQ=
3)3.999 mPQ=
4) 4.1 mPQ=
5) 4.01 mPQ=
im so confused! i just started this and my teacher really didn't explain it. can someone please break this down for me?

See my reply to your previous post
http://www.jiskha.com/display.cgi?id=1346202745
All 5 answers should be very close to 2
(the exact answer is 2 which will make sense in a couple more lessons )